COMBUSTION CHAMBER

combustion chamber

DIRECT COMBUSTION

. High efficiency

. Easily start

. Compatible with big engine

. Low exhaust temperature

. Sensitively with quality of fuel

. Need high pressure injection

. Need multi hole injector

. Low turbulence and difficult for high speed

PRE COMBUSTION CHAMBER

. Widely fuel type used

. Good turbulence

. Easily of fuel pump maintenance

. Low injection pressure

. Compromise with changing of injection timing

. Less of detonation

. Complex construction of cylinder head.

. Low capability of starting engine

. Wasteful of fuel usage

PRE COMBUSTION CHAMBER

. Good turbulence when compression stroke

. High speed produce

. Less of nozzle trouble

. Compatible for automobile

. Complex construction of cylinder head

. Low efficiency

. Detonation when in low speed..

DIFFERENT OF ENGINE GASOLINE AND ENGINE DIESEL

BASIC PRINCIPLE FOUR STOKE DIESEL ENGINE

KLASIFIKASI ENGINE

KLASIFIKASI ENGINE

ENGINE DIESEL BASIC

Definisi

Engine adalah : Suatu alat yang menghasilkan tenaga melalui suatu proses tertentu, dimana proses thermis diubah menjadi tenaga mekanis.

Machine/Unit adalah : Suatu unit secara keseluruhan, yang mencakup engine sampai final drive.

Prinsip Kerja Engine

Udara yang dimasukkan kedalam silinder liner, kemudian dikompresikan hingga suhunya naik mencapai 300 – 400 oC, kemudian disemprotkan bahan bakar (solar) sehingga terjadi pembakaran, yang menghasilkan tekanan sebesar 60 – 80 kg/cm2 dengan suhu sekitar 600 – 800 oC.